Leonard: Well, if Sheldon and Amy don't want to expose Pemberton, that doesn't mean someone else can't do it for them. They'd never have to know.
Penny: Really? You'd do that?
Leonard: They deserve the Nobel. I'm not gonna let two frauds steal it from them. And if that means getting my hands dirty, so be it.
[Penny laughs]
Leonard: What's so funny?
Penny: Just realized I've never actually seen your hands dirty.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

Penny: I mean, who even reads Scientific American?
Leonard: It's kind of a big deal.
Penny: If it's such a big deal, how come the biggest celebrity they could get for the cover is a molecule?

Sheldon: Are you all right? You seem distracted.
Amy: Yeah, sorry. I'm just trying to figure something out.
Sheldon: Is it what to get me for our anniversary? 'Cause I'll give you a hint: it's already in my Amazon basket. Just click "buy now." I filled out the gift card for you. Apparently, I'm the light of your life.

Sheldon: So I was talking to my mom about our Pemberton and Campbell situation.
Amy: Really? What'd she say?
Sheldon: Apparently, Old Testament God would bring down his wrath on them for being deceitful, but New Testament God would forgive them.
Amy: So couldn't we just bring down our wrath and ask the New Testament God to forgive us?
Sheldon: You know, I asked her that very question.
Amy: And?
Sheldon: She said I was full of California sass.

Barry Kripke: Oh God, I hate that guy.
Sheldon: That's strange; you seem quite fond of him.
Barry Kripke: I was only being polite. Pemberton is a grade A weasel.
Sheldon: How do I know you're not just being polite when you say it's nice to see me?
Barry Kripke: I have literally never said that to you.